Lake Torfadalsvatn: a high resolution record of the North Atlantic ash zone I and the last glacial‐interglacial environmental changes in Iceland
High resolution environmental records with a refined chronology are essential to understand, reconstruct and model the climate dynamics of the last glacial‐interglacial transition. Sediments from Lake Torfadalsvatn in northern Iceland contain at least four primary volcanic tephras that belong to ash...
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1992
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Online Access: | http://dx.doi.org/10.1111/j.1502-3885.1992.tb00009.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1502-3885.1992.tb00009.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1502-3885.1992.tb00009.x |
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crwiley:10.1111/j.1502-3885.1992.tb00009.x 2024-06-02T08:08:35+00:00 Lake Torfadalsvatn: a high resolution record of the North Atlantic ash zone I and the last glacial‐interglacial environmental changes in Iceland BJÖRCK, SVANTE INGÓLFSSON, ÓLAFUR HAFLIDASON, HAFLIDI HALLSDÖTTIR, MARGRÉT ANDERSON, N. JOHN 1992 http://dx.doi.org/10.1111/j.1502-3885.1992.tb00009.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1502-3885.1992.tb00009.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1502-3885.1992.tb00009.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Boreas volume 21, issue 1, page 15-22 ISSN 0300-9483 1502-3885 journal-article 1992 crwiley https://doi.org/10.1111/j.1502-3885.1992.tb00009.x 2024-05-06T06:59:56Z High resolution environmental records with a refined chronology are essential to understand, reconstruct and model the climate dynamics of the last glacial‐interglacial transition. Sediments from Lake Torfadalsvatn in northern Iceland contain at least four primary volcanic tephras that belong to ash zone I in the North Atlantic deep‐sea cores. We chemically define these basaltic/rhyolitic tephras and the high resolution allows us to date them to about 10,800, 10,600, 9300 and 8900 BP. This detailed tephrostratigraphy will act as a refined dating and correlation tool in the North Atlantic region and enable calibration between different absolute chronologies. The pollen stratigraphy of the sediments suggests that by 10,400 14 C years BP plant colonization of coastal north Iceland had begun. The pollen stratigraphy shows a succession of pioneer plants, from open tundra vegetation towards birch‐juniper woodland, which probably also reflects a transition from a cool climate at 10,400 BP to conditions similar to today's sub‐polar oceanic climate around 9200 BP. Diatom data largely concur with the climatic information from pollen, indicating gradually increasing productivity in the lake. Article in Journal/Newspaper Iceland North Atlantic Tundra Wiley Online Library Torfadalsvatn ENVELOPE(-20.383,-20.383,66.062,66.062) Boreas 21 1 15 22 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
High resolution environmental records with a refined chronology are essential to understand, reconstruct and model the climate dynamics of the last glacial‐interglacial transition. Sediments from Lake Torfadalsvatn in northern Iceland contain at least four primary volcanic tephras that belong to ash zone I in the North Atlantic deep‐sea cores. We chemically define these basaltic/rhyolitic tephras and the high resolution allows us to date them to about 10,800, 10,600, 9300 and 8900 BP. This detailed tephrostratigraphy will act as a refined dating and correlation tool in the North Atlantic region and enable calibration between different absolute chronologies. The pollen stratigraphy of the sediments suggests that by 10,400 14 C years BP plant colonization of coastal north Iceland had begun. The pollen stratigraphy shows a succession of pioneer plants, from open tundra vegetation towards birch‐juniper woodland, which probably also reflects a transition from a cool climate at 10,400 BP to conditions similar to today's sub‐polar oceanic climate around 9200 BP. Diatom data largely concur with the climatic information from pollen, indicating gradually increasing productivity in the lake. |
format |
Article in Journal/Newspaper |
author |
BJÖRCK, SVANTE INGÓLFSSON, ÓLAFUR HAFLIDASON, HAFLIDI HALLSDÖTTIR, MARGRÉT ANDERSON, N. JOHN |
spellingShingle |
BJÖRCK, SVANTE INGÓLFSSON, ÓLAFUR HAFLIDASON, HAFLIDI HALLSDÖTTIR, MARGRÉT ANDERSON, N. JOHN Lake Torfadalsvatn: a high resolution record of the North Atlantic ash zone I and the last glacial‐interglacial environmental changes in Iceland |
author_facet |
BJÖRCK, SVANTE INGÓLFSSON, ÓLAFUR HAFLIDASON, HAFLIDI HALLSDÖTTIR, MARGRÉT ANDERSON, N. JOHN |
author_sort |
BJÖRCK, SVANTE |
title |
Lake Torfadalsvatn: a high resolution record of the North Atlantic ash zone I and the last glacial‐interglacial environmental changes in Iceland |
title_short |
Lake Torfadalsvatn: a high resolution record of the North Atlantic ash zone I and the last glacial‐interglacial environmental changes in Iceland |
title_full |
Lake Torfadalsvatn: a high resolution record of the North Atlantic ash zone I and the last glacial‐interglacial environmental changes in Iceland |
title_fullStr |
Lake Torfadalsvatn: a high resolution record of the North Atlantic ash zone I and the last glacial‐interglacial environmental changes in Iceland |
title_full_unstemmed |
Lake Torfadalsvatn: a high resolution record of the North Atlantic ash zone I and the last glacial‐interglacial environmental changes in Iceland |
title_sort |
lake torfadalsvatn: a high resolution record of the north atlantic ash zone i and the last glacial‐interglacial environmental changes in iceland |
publisher |
Wiley |
publishDate |
1992 |
url |
http://dx.doi.org/10.1111/j.1502-3885.1992.tb00009.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1502-3885.1992.tb00009.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1502-3885.1992.tb00009.x |
long_lat |
ENVELOPE(-20.383,-20.383,66.062,66.062) |
geographic |
Torfadalsvatn |
geographic_facet |
Torfadalsvatn |
genre |
Iceland North Atlantic Tundra |
genre_facet |
Iceland North Atlantic Tundra |
op_source |
Boreas volume 21, issue 1, page 15-22 ISSN 0300-9483 1502-3885 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1502-3885.1992.tb00009.x |
container_title |
Boreas |
container_volume |
21 |
container_issue |
1 |
container_start_page |
15 |
op_container_end_page |
22 |
_version_ |
1800753879744249856 |